diff --git a/DTI-CDF_requirements.txt b/DTI-CDF_requirements.txt
index 1f01fd2..92b3ab6 100644
--- a/DTI-CDF_requirements.txt
+++ b/DTI-CDF_requirements.txt
@@ -36,7 +36,7 @@ kiwisolver==1.0.1
 Markdown==3.0.1
 MarkupSafe==1.1.1
 matplotlib==2.2.3
-mistune==0.8.4
+mistune==2.0.3
 mkl-fft==1.0.6
 mkl-random==1.0.1
 mock==2.0.0